public class E5{
    public static void main(String args[]){
      int []a={10,20,30,40},b[]={{1,2},{4,5,6,7}};
      b[0]=a;
      b[0][1]=b[1][3];
      System.out.println(b[0][3]);
      System.out.println(a[1]);
    }
}

